POLLUTION LOCATOR| Water | State Clean Water Act Status Report
Clean Water Act Status: DISTRICT OF COLUMBIA
 
 
  • Clean Water Act Comparative Ranking
    Cleanest/Best States National Average Dirtiest/Worst States
    0%         50%         100%

    Percentage of Surface Waters with Impaired or Threatened Uses (state + EPA data):
    Number of Impaired Waterbodies (as reported by the state):

    NOTE: Data limitations affect the accuracy of these rankings.

    Rank counties in DISTRICT OF COLUMBIA or in the U.S. by assessed use impairments.
    Rank watersheds in DISTRICT OF COLUMBIA by assessed use impairments
    Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources

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  • 1998 Clean Water Act Status
    DISTRICT OF COLUMBIA contains a portion of 1 watersheds:
    Middle Potomac-Anacostia-Occoquan
    Percentage of Surface Waters with Reported Problems (state + EPA data): 27%
    Number of Waterbodies with Reported Problems (as reported by the state): 36
    Beneficial uses not reported for 100% of waterbodies.

    Priority for Regulation     Number of Waterbodies
    Targeted 0
    High 7
    Medium 5
    Low 20
    Not Assessed for TMDL Priority 0
    Not Reported to US EPA for TMDL Priority 4
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 27
    Percent of Rivers, Streams and Creeks in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 98%
      Percent Waterbodies Affected
    Organic Compounds 81%
    Pathogens 59%
    Metals 48%
    Sediments 7%
    Low Dissolved Oxygen/Organic Enrichment 4%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 3
    Percent of Lakes, Reservoirs and Ponds in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Pathogens 100%
    Organic Compounds 67%
    Metals 33%
    Low Dissolved Oxygen/Organic Enrichment 33%
    Sediments 33%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 6
    Percent of Estuaries and Bays in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 97%
    Percent of Coastal Shorelines in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 97%
      Percent Waterbodies Affected
    Organic Compounds 100%
    Pathogens 100%
    Low Dissolved Oxygen/Organic Enrichment 33%
    Sediments 33%
    pH 33%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


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  • Leading Sources of Water Quality Problems
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 27
    Percent of Rivers, Streams and Creeks in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 98%
      Percent Waterbodies Affected
    Nonpoint Sources 100%
    Combined Sewer Overflows 19%
    Municipal Point Sources 7%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 3
    Percent of Lakes, Reservoirs and Ponds in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 100%
      Percent Waterbodies Affected
    Nonpoint Sources 100%
    Combined Sewer Overflows 33%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 6
    Percent of Estuaries and Bays in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 97%
    Percent of Coastal Shorelines in DISTRICT OF COLUMBIA assessed by agencies for 1997-98 reporting period: 97%
      Percent Waterbodies Affected
    Nonpoint Sources 100%
    Combined Sewer Overflows 83%
    Municipal Point Sources 67%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


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